Tag: water: a precious resource

Questions Related to water: a precious resource

The water table fluctuates:

social science water: a precious resource water table groundwater and depletion of water table the water cycle

  1. by climatic variations

  2. by the amount of precipitation used by vegetation

  3. by withdrawing excessive amounts of water from wells

  4. all of them

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Correct Option: D
Explanation:

The water table is also known as ground water table in which water seeps into the ground and move downward till it reaches the stage of saturation hence it fluctuates by changes in seasons, precipitation or by withdrawing a large amount of water. 

Which of the following does not cause a depletion in the water table of a place?

social science water: a precious resource water table groundwater and depletion of water table the water cycle

  1. Constructing factories and houses

  2. Making concrete roads and floors

  3. Deforestation

  4. None of these

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Correct Option: D
Explanation:

All the three options cause depletion in water table in a place as first and second case consume water and third case decrease water retention of soil and also decrease rainfall.

So, none of these is the correct option.                     

What happens to the water table of a place having droughts for a long period of time?

social science water: a precious resource water table groundwater and depletion of water table the water cycle

  1. It gets higher because of continuous evaporation and flow.

  2. It gets lower because of continuous evaporation and flow

  3. It gets replenished continuously

  4. can't say anything

Show answer
Correct Option: B
Explanation:

The water table is also called as groundwater table. It's recharge depend on the recharge from infiltration of precipitation so when a drought hit the land surface it affects the water level below ground. This result in falling groundwater level due to evaporation and flow.

So, the correct option is 'it gets lower due to continuous evaporation and flow'.

A man digging the ground near a water body found that the soil was moist.As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called:

social science water: a precious resource water table groundwater and depletion of water table the water cycle

  1. water level

  2. ground water

  3. water table

  4. water limit

Show answer
Correct Option: C
Explanation:

The upper limit of this layer where water is present between particles of soil and gaps between rocks is called water table and water below the layer is called groundwater.